Summit Ropes in Loudoun County could be an oasis of indoor fun for kids during the cold months. The Nearly 17,000-square-foot is due to open by February.

Business partners Amy Stuart and Daniel Kasabian are building what they describe as the largest indoor ropes course in the United States in about half of the interior of an old industrial building in Sterling in Loudoun County.

The 16,550-square-foot course, called Summit Ropes, is due to open by February 2019 at 44810 Old Ox Road.

The claim to fame—that of the largest such indoor course in the U.S.—is based not on the square-footage, but on the number of rope elements, Kasabian told the Washington Business Journal’s Michael Neibauer: There will be 120 rope obstacles—or elements—between poles.

Bulgaria-based Walltopia is handling the design and engineering of the course, which will be available to clients 4 and up (don’t worry—there will be a children’s run less strenuous than the one for adults).

Conveniently enough, too, the course will be located less than a mile from the planned Loudoun Gateway Metro stop.